Buffing cooling mechanism



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BUFFING COOLING MECHANISM March 18, 1958 Filed April 10, 1957 Nm m .vm. NMS vm. ;MM- i a N GNMWNNSU am m. n m. UQ S* mm www m ww NMMNRN O www. @NQ O QmmNJvN `hm,\\ RM Q Hmm 5g MMM/@yyg MalCh 18, 1958 J. c. wlsNlEsKl ETAL BUFFING COOLING MECHANISM 2 .Sheets-Sheet 2 Filed April 10, 1957 BUrriNG cooLiNG MECHANISM `lohn C. Wisnieslii, Detroit, and Wayne A. Martin,

Berkley, lia/lich., assignors to Lyon Incorporated, Detroit, Mich., a corporation of Delaware Application April 10, 1957, Serial No. 652,013 7 Claims. (Cl. 51-266) This invention relates generally to a new and improved air cooled buffng machine'construction.

More particularly, this invention relates to a new, improved and highly simplified buffmg machine construction which machine is especially adapted to maintain the buds during butiing in a cooled state so as to lengthen the life span of the bus.

Still another object of this invention is to provide new and improved means for controlling the movement of air through the bul-ling machine including passages for generally radially moving air into passages in the drive shaft and then moving the air radially outwardly through the drive shaft into the buff to cool the same.

A further object of this invention is to provide a new and improved air cooling system for a bufling machine for cooling the buffs during a bufling operation which system constitutes an economical installation and is highly efficient in cooling the bulfs.'

According to the general features of this invention lthere is provided in an air cooled bul-ling machine, a

housing having an internal bore, a drive shaft rotatably mounted in the bore having an axially extending air passage intermediate opposite ends of the drive shaft, a buiiing wheel structure carried on the shaft in overlying relation to the generally axial air passage, a plurality of generally radial air passages between the axial air passage and the butf structure for cooling same, axially spaced shaft seal assemblies between the drive shaft and the housing, a compressed air chamber disposed generally axially between the shaft seal assemblies and generally radially between the drive shaft and the housing with the chamber having a compressed air inlet, at least one generally radial passageway between the axial shaft air passage and the compressed air chamber with air moving from the compressed air inlet through the chamber into the passage in the shaft and then along the passage and out through the radial air passages for cooling the bufng wheel structure, the shaft having a spiral groove therein linking the plurality of radial air passages to aid in the uniform direction of air through the butiing wheel structure. Y

Other objects and features of the present invention will more fully become apparent in view of the following detailed description taken in conjunction with the accompanying sheets of drawings illustrating therein a single embodiment, and in which:

Figure 1 is a radial cross-sectional view of the buing machine of this invention with parts broken away in full lines highlighting certain features;

Figure 2 is an enlarged fragmentary side elevation of a buiing Wheel; and

Figure 3 is an enlarged fragmentary cross-sectional view taken on the line lll-III of Figure 2 looking in the direction indicated by the arrows.

f As shown on the drawings:

The reference numeral 10 indicates generally our bufiing machine. The bufling machine includes a tubular housing 11 carried by a conventional ball bearing assem- Y moving axially along theshaft and escaping.

2,826,88@ Patented Mar. 18, 1953 ICC ,way 14 extending axially to shaft section 13e which is of a reduced diameter as compared to the shaft section 13b and 13d. To seal off the axially outer end of the shaft section 13g, a plug 15 is fitted into sealed engagement in an end portion of the longitudinal passageway 14.

To further support the shaft 13 and to provide a sealed compressedv air chamber 16, shaft seal assemblies 17 and 18 arey carried by the shaft sections 13b and 13d respectively. The shaft assemblies are constructed in such a manner that the compressed air chamber 16 is generally defined at its outer periphery by the seal assemblies 17 and 18. vln communication with the compressed air chamber i6 is a compressed air conduit 19 having an inlet 2li into the chamber 16. To connect the longitudinal shaft passageway 14 with the chamber .16, a radial passageway is provided in the reduced shaft section 13e so that air may move through the conduit 19, through the inlet 20 and into the chamber 16 whereupon the air may then liow into the longitudinal extending shaft passageway 14.

According to certain features of the present invention the shaft section 13g is providedpwith a continuous rather sharply pitched spiral groove 22 suitably formed in the shaft by machine operations and the like. At suitable intervals the groove 22 is drilled to provide a plurality of radially extending channels or passageways 23 connecting the groove with the longitudinally extending shaft passageway 14. Mounted on the reduced shaft section 13g is a buff or buing wheel 24 comprised of a plurality of annular buff sections 25. Cool air is discharged from the ports of the passageways 23 into the inner contines of the annular buff structure to cool the same.

The housing 11 has a tubular housing wall 24 which is internally formed so as to provide wall sections 24a and 24b of varying internal diameters with an annular axially outwardly facing shoulder 25 between the sections 24a and 24h. The shaft assembly 17 is in abutting engagement against the annular shoulder 25.

Since the construction of the shaft assemblies 17 and 18 are substantially identical, primed reference numerals have been utilized to identify identical elements in the shaft assembly 18.

The shaft seal assemblies each have a pair of annular blocks 26, 26 and 27 and 27 with the blocks 26, 26 each being generally L-shaped in cross section.

Disposed between each of the pairs of blocks previously described is an annular ring 28, 2S having a ring mounting 29 and 29 lodged or seated within an internal pocket in the ring 28, 28' and supporting the assembly upon the shaft. The ring mountings may be made from any suitable material such as neoprene and are adapted to be carried upon the drive shaft sections 13b and 13d as the case may be. To seal the junction between the blocks 26, 26' and 27, 27 with the drive shaft, O-ring seals 30, 30' are disposed at the junction of the aforementioned blocks with the inner casing wall. These rings serve to preclude air and oil from To maintain the blocks 28, 28 in position, the blocks 26, 26' are provided with radially inwardly extending extensions 31, 31 which extensions cooperate with the generally L-shaped blocks 26, 26 to define pockets. Disposed in the pockets and between the shaft andthe blocks 26, 26 are lodged retainer ring members 32, 32. Bearing against the retainer members 32 are springs 33, 33. The springs on each assembly bear at one of the axial ends against one of several pairs of carbon blocks 34, 34 with carbon blocks on axially op "posite ends of the annular"seatfmembers'in' abutting `lengagement therewith. Y

On the other side of the seat`memberf28 isdisposed an annular plate 35, 35. Each of the-plates"35,`35 is in interloclted assembly withone of the block members v27, 27.

Disposed between thefplate memberr35,35"and the block member 28, 28"is the retainer, ring 35, 36', the springs `33, 33and the carbon'block34, 34', whichcar bon `blocks bear againstthe member 28, 28. Due to the spring forces exerted against the carbon blocks thecarbon blocks are-.maintained in abutting engagement against the ring member 28, 28. Becauseof the close t between the 'carbon blocks `34 with `respect-to ther'otating ring member 28 an oil tightseal `iscreated.I

Positioned above lthe -member 28, 28'f'is an oil yreceptacle 35,35 which is adapted to permit oilfto be metered into a `chamber above :the member 28, 28" and between the block members 26, 26 and 27, 27 to lubricat'e the end faces of the carbon blocks with respect tothe rotary ring member 28, v'28'. Hence, at 'all times,` the carbon block due to the spring force are maintained.. in snug engagement against the rotary ring member 28, 28.

In abutting engagement against the seal assembly 18 is the ball bearing Vassembly `12 which assembly 12 is carried on the reducedshaftsection 13e.

To maintain the ball bearing assembly in Asnug engagement against annular shoulder 36a between the sections 13d and 13e, shaft section'lSf is threaded 'at 37. Pressed against the ball bearing assembly is a washer 38 and a nut 39 is threaded `upon the threads 37 to snugly urge the roller bearing assembly 112 againstthe shoulder 36a. To lock the nut in position, Nthe washer portion 38 is turned into a notch in the nut 39 to 'maintain the nut in rm assembly with the rotary portion of the roller bearing assembly 12.

Disposed over the end (of the' housing 11 isa closure cap 40 which'is bolted to the casing wall by means of screws 41.

The butling wheel '24 is of the general order` ofA the buiiing wheel disclosed in the John C. Wisnieskiapplication for patent entitled Buing Wheel Structure, Serial No. 401,560,1iiled December 3l, 1953.`

Each annular ,section 24 is comprised of a plurality of layers of bufiing material which mayV be sisal type` fibers or cloth or other suitable materials..A The plies of each buff section 24 are held together `and carried in assembly byk annular `rings 42 and 43. Each of the rings 42 has an annular ange 44 for engaging against the outer surfacefof the shaftgsection 13g; Llpwardly from the flange 44, the ring 42 has` a spacer ilange 45 which has a series ofhjcircumferentially spaced ports or openings 46 for facilitating movement of airaxially through` the buing wheel. 4,Upwardly from the annular spacer flange 45 the ring 42 is of a stepped construction including annular llangesn47 and 48with annular tlange 47 being concentricrwith annular ange 4'4 and annular tiange 48 being concentric with annular llange 45. lt will be noted in Figure 2 that the liange 48 is corrugated or undulated to provide a series of radially extending channels or air passageways` 49 `whenring 43 is in assembly therewith. y n

In more detaihnthe ringd43` is generally C-sh'aped in cross section `including adseries` of circumferentially spaced inner generally axially extendingilange portions or `prongs 50, a generally radialjlyoutwardly extending annulaiend tiange portionmSlf, anda seriesk of circumferentially spaced ,generally` axially extending flange portions or prongs 52. p p,

Where the prongs 50` and 52 are stationed there is positioned radially therebetween an axially olset rib 53 which extends in a generally radially outwardly direction `and defines with the inner ring 42, and more particularly the annular ilange portion 48, enlarged passages or air channels 54 (Figure 3).

Assembly of the buff sections upon the drive shaft 13 may be brought about by initially slipping a ring member 55 onto the shaft 1;3 and moving the ring member axially against the 'shoulder 56 at the junction of the shaft section 13jc and 13g. Thereafter each of the individual annular buff sections 24 may be aligned with theshaft` and moved thereover against the ring member 55. At this point a second ring member 57 is centered with respect to Vtheshaft 13 and engaged therewith while being imoved"a',`gainst the axially outermost buff section 25. A nut 58 is then threaded onto the threaded end of the shaft section 13g to'clamp the butling sections 25 together to form a hurling wheel 24.

It will be appreciated that as the air is discharged radiallyfthrough the ports 23 the air is free to further move radially or axially in the butiing wheel. The air may move Aaxially betweenV the various butiing sections through thelielicalgroove 22 and also lthrough the openings`46. The airis free to move radially in the butling wheel by virtue of the channels or'passages 49 and 54 in the ring members 42 and 43 whichring members also serve.toy secure lthe plies of each of the buit sections in assembly, with one another.

Theyplies. may be securedwith the ring members 42 and 43`gof each bult section '25 by initially moving the plies agai'r1st 'the angular annular shoulder defined by angled anges 47 and 48'. The C-shaped ring 43` is then moved 'axiallywith respectto ring 42 with prongs 50 underlappin'g ring tlange `470i` ring 42 and with prongs 52 overlapping the radially outermost tip ofllange 48 of ring 42`andbcing embedded in the plies of buil material. The plies of the bufng may be glued or sewn together if desired. .Y c

It will be understood, that lmodifications and variations may be effected without departing from the scope of the novel concepts of the present invention.

We claim as nour invention:

l. In an air cooled butlingmacbine, a `housing having an 'internal bore, a drive shaft rotatably `mountedin said bore having an axially extending airpassageintermediateV opposite'ends of said drive shaft, a butiing wheel structure carried on said shaftin overlying relation to` said generally axial airpassage, a plurality of generally radial air passages between said axial `air passage and `said buff structure for cooling same, axially spaced shaft seal assemblies between ,said ,drive shaft and ,said housing, a compressed airchamber disposed generally` axiallybetween said shaftseal assemblies andgenerally radially between said Ydrive `shaft `and said housing with said chamber havingha compressed air inlet, at least one generally radial passageway between said V,axial shaft air passage and` saidcomprcssed air chamber `with air moving from saidompressed air inlet through the chamber into the passage inthe shaft, and ,then along the passage and out through the radial air passages for cooling the buing wheel structure. A t

2Min an air ooledbufling machine, a housing having an internal bore, a` drive shaft rotatably mounted in said bore havingantaxially `extending air passage intermediate opposite ends of said drive,shafta builing wheel structurecarried onsaid shaft invoverlying relation to said generally axial airnpassage, a plurality of generally radial air passages between said` axial air passage and said buff structure `for cooling same,` axially spaced shaft seal assemblies between said drive shaft andsaicl housing, a compressed air chamber disposed generally faxially between saidushaft `seal assemblies and generally 4radially between said drive shaft and said `housing with said chamber having a compressed air inlet, at least one generally Vradial passageway between said axial shaft air passageand saidcompressed air chamber with air moving from said compressed air inlet through the chamber into the passage in the shaft and then along the passage and out through the radial air passages for cooling the bufling n wheel structure, said shaft having a spiral groove therein linking the plurality of radial air passages to aid in the uniform direction of air through the bufng wheel structure.

3. In an air cooled bulng machine, a housing having an internal bore, a drive shaft including main and end shaft portions rotatably mounted in said bore with'the end shaft portion having a reduced diameter as compared with the main shaft portion and with a shoulder at the junction of the shaft portions, said shaft having an axially extending air passage extending axially outwardly from the housing into the end shaft portion, a buiiing wheel structure comprised of a multiplicity of annular bulf sections in abutting relation to one another with the buff section in closest proximity to said shoulder abutting thereagainst and with said sections positioned in overlying relation to the generally axial air passage in said end shaft portion, a plurality of generally radial air passages between said axial air passage and said buff structure for cooling the same, axially spaced shaft seal assemblies between said drive shaft and said housing, a compressed air chamber disposed generally axially between said shaft seal assemblies and generally radiallyv between said drive shaft and said housing with said chamber having a compressed air inlet, at least one generally radial passageway between said axial shaft air passage and said compressed air chamber with air moving from said compressed air inlet through the chamber into the axially extending air passage in the shaft and then along the shaft and out through the radial air passage for cooling the bufing wheel structure, and clamp means on said end shaft portion urging said buff sections into snug engagement with one another and against said shoulder.

4. In an air cooled buing machine, a drive shaft having an axially extending air passage intermediate opposite ends of said drive shaft, a bufling wheel structure carried on said shaft in overlying relation to said generally axial air passage, said bufling wheel structure including a plurality-of annular bui sections, each of said bui sections including a mounting ring and a ring of buing material mounted in assembly therewith, said rings having axially offset portions defining radially outwardly opening passages between the bul sections to permit air to pass between the bulf sections, a plurality of generally radial air passages between said axial air passage and said passages in said buff structure for cooling the buff, and a spiral groove in said shaft underlying said buflng wheel structure with said groove having said radial air passages therein to aid in the distribution of air radially outwardly through the buing structure.

5. In an air cooled bung machine, a drive shaft having an axially extending air passage extending along the length of said drive shaft, a bufling wheel structure carried on said shaft in overlying relation to said generally axial air passage, said bul`ng wheel structure including a plurality of annular buff sections, each of said bui sections including a mounting ring and a ring of buing material mounted in assembly therewith, said rings having axially offset portions defining radially outwardly opening passages between the buff sections to permit air to pass between the bulf sections, a plurality of generally radial air passages between said axial air passage and said passages in said buff structure for cooling the buff, and a spiral groove in said shaft underlying said bufrlng wheel structure with said groove having said radial air passages therein to aid in the distribution of air radially outwardly through the buing structure.

6. In an air cooled bufng machine, a centrally bored drive shaft which bore denes an axially extending air passage extending along the length of said drive shaft, a buing wheel structure carried on said shaft in overlying relation to said generally axial air passage, said bufng wheel including an annular fiber buff structure and mounting ring structure supporting the ber bulf structure upon the drive shaft, said bufng wheel also including a plurality of circumferentially disposed radially extending air passages for cooling the buff, said shaft being peripherally grooved with the radially extending air passages in communication therewith, and with the drive shaft including the peripheral groove having radial air passageways communicating the peripheral groove with the axially extending passageway, said radially extending air passageways being cooperable with the peripheral groove and the radial passages to laid in the distribution of air from the axially extending air passage radially outwardly through the bufhng structure, and retaining structure for fastening the buing wheel structure to the drive shaft.

7. In an air cooled bufing machine, a housing having an internal bore, a drive shaft rotatably mounted in said bore having an axially extending air passage intermediate opposite ends of said drive shaft, a bulng wheel structure carried on said shaft in overlying relation to said generally axial air passage, at least one air outlet passage between the axial air passage and the buif structure for cooling same, axially spaced air seals between the drive shaft and the housing, a compressed air chamber disposed generally radially of the drive shaft, with the chamber having a compressed air inlet, at least one generally radial air inlet passageway between the axial shaft air passage and said compressed air chamber with air moving from said compressed air inlet through the chamber into the air inlet passage in the shaft, and then along the axially extending air passage and out through at least one air outlet passage for cooling the buing wheel structure.

No references cited. 

